(恋にBooing ブー！) is the 5th major single by the Japanese girl idol group S/mileage.
It was released in Japan on April 27, 2011 on the label Hachama.
[1] The B-side of the regular edition was a cover of the song "Koi o Shichaimashita!"
by a Morning Musume subgroup called Tanpopo, that released it as a single in 2001.
All the limited editions came with a sealed-in serial-numbered entry card for the lottery to win a ticket to one of the single's launch events.